Walkabout the Galaxy

Joshua Colwell, Adrienne Dove, and James Cooney
  • 5,0 (3)
  • Naturwissenschaften
  • Wöchentlich

An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.

  1. 9. Juli

    Distant Quasars and Earth's Quasi-Moon

    Quasars, the energetic engines driven by the voracious appetite of supermassive black holes, have been observed in the very early universe, upending ideas about how long it took to form these behemoths in the first place. New results on a peculiar object tagging along around the Sun with the Earth casts doubt on its origin as a possible fragment of the Moon. And the climate takes a swipe at strange quark for complaining about the heat. Check it all out, plus trivia and space news, on Walkabout the Galaxy.

  2. 1. Juli

    I See a Big Moon Rising and a Bright Radio Sky

    The astroquarks examine the oft-asked question of why the Moon sometimes looks huge and other times, not so much, and we take a look at the cool mission to grapple and boost the NASA Swift space telescope into a higher orbit. Plus, new observations reveal that the sky is much brighter at radio wavelengths than previously assumed, teaching us something about the population of free electrons. Join us for all this, space trivia, and more.

  3. 25. Juni

    Europa's Disappearing Plumes

    OG Top Quark Tracy Becker joins us with an update on water plumes from Jupiter's moon Europa, plus intriguing new data of interstellar comet 3I shows it is even older than we thought, with an age approaching that of the Milky Way galaxy itself. A new field of tektites has been discovered, pointing to a previously unknown major impact on the Earth. Join us for all this, space news, trivia and more.

  4. 4. Juni

    Second Generation Black Hole Mergers and Solar System Chaos

    Exquisitely detailed measurements of the ripples in spacetime from the mergers of black holes now show that some of these merging black holes were, themselves, created by an earlier black hole merging event. While this had been suspected to take place, we now have clear evidence of it. On a less dramatic scale but much closer to home, new simulations of the early solar system suggest the large population of moons of Uranus needed help from a now long lost fifth giant planet to survive. Join us for all this, space news, trivia, and a generally good time.

  5. 20. Mai

    Whacky Black Hole Collisions and Strange Uranian Rings

    Mysterious bright blue flashes from relatively empty parts of the universe have a new possible explanation involving, what else, black holes. We explore this new idea to explain Luminous Fast Blue Optical Transients (LFBOTs) with black hole collisions, take a peek at the black hole in our own Milky Way, and discuss some puzzling observations of two of the rings of Uranus. Plus, we have a stupid stumper, exoplanet trivia, space news, and a top quark hot take!

  6. 13. Mai

    Little Plutino Has An Atmosphere and Making Sense of Saturn

    A Plutino, an object that shares Pluto's orbit but which is much smaller than Pluto, appears to have a very thin global atmosphere. We discuss the detection and how such a small body could hold onto even a thin atmosphere, as well as a new model that describes many of Saturn's peculiarities with a recent collision between its big moon Titan and a precursor to the sponge-y moon Hyperion. Join us for all this, space news, astronomy trivia, and much more.

  7. 28. Apr.

    Superkilonova and Artemis II Recap

    Gravitational waves and light combine to reveal what is suspected to be a superkilonova which is much cooler than the name suggests. Cool in the cool way, not the temperature way. Learn about splitting neutron stars and, in our Artemis II recap, we revisit the highs (awesome mission, great astronauts) and lows (broken space toilet) of the mission that took people a record distance from the Earth, and what's next. Plus, trivia, stumper, fake sponsor, and all the nuttiness you've come to love and miss from the astroquarks. We're back!

  8. 18. März

    A Whisper of a Hint of Primordial Black Holes plus Earth BLOBs

    Gravitational Wave observatory LIGO has seen a signature that looks like the merger of primordial (pre-stellar, big bang (not big band!) era) black holes. If confirmed with future observations, this would tell us a lot about the early universe and potentially shed light on dark matter. Finally! Plus, closer to home, the BLOBs in the Earth's mantle help us untangle the complicated past of our magnetic field.

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An irreverent and informative tour of the latest, greatest, and most interesting discoveries in astronomy.

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  • Erstellt von
    Joshua Colwell, Adrienne Dove, and James Cooney
  • Jahre aktiv
    2014 - 2026
  • Folgen
    369
  • Bewertung
    Unbedenklich
  • Copyright
    © Joshua Colwell
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    Walkabout the Galaxy